Turn-lock cover



FIG. 1 is a front perspective view thereof, illustrating our new Design;

FIG. 2 is a side elevation view, the opposite side view being a mirror image thereof;

FIG. 3 is a rear elevation view thereof; and,

FIG. 4 is a top plan view, the bottom plan view being a mirror image thereof.

The broken line environmental showing is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a turn-lock cover, as shown and described. 